Freerails Home 
Home Search search Menu menu Not logged in - Login | Register
Freerails > Model Railroad Forums > R.C. Control - The Future Now If You Desire > Seeking Assistance With 'DelTang' Rx61-22-W

Freerails IS ACCEPTING new Members ... To join Freerails ... See how to Register as a Member in the 'Joining Freerails' Forum

Seeking Assistance With 'DelTang' Rx61-22-W
 Moderated by: W C Greene Page:    1  2  3  Next Page Last Page  
New Topic Reply Printer Friendly
 Rate Topic 
AuthorPost
 Posted: Tue Nov 28th, 2017 01:24 pm
  PMQuoteReply
1st Post
Corbs
Registered
 

Joined: Tue Mar 28th, 2017
Location:  
Posts: 10
Status: 
Offline
Hello everyone, my name is Corwin (Corbs). I was hoping someone could help me with some issues I've been having with my DelTang Rx61-22-W.

The loco has been butchered a lot, but the essence is a Hornby 'Pug' chassis, now with a 3v motor fitted. It uses a 1s LiPo battery. I use a Tx22 controller. It has a few problems. Firstly, it takes so long to synchronise the Rx with the Tx. They seem to constantly forget each other. Whilst it has a solid light to indicate they are in synch, there is no response to any input from me. I have to switch them off and re-bind the Tx to the Rx, sometimes multiple times. Then, often I will only get a short period of responsiveness before the motor stops responding to controls and just keeps going of its own accord and won't stop until it's switched off. Are these two issues related? The binding problem was there before I changed the motor to a 3v one. The aerial snapped off the Rx some time ago, could this be part of the issue?
Many thanks

Corwin

Back To Top

 Posted: Tue Nov 28th, 2017 02:57 pm
  PMQuoteReply
2nd Post
Helmut
Registered


Joined: Sun Feb 17th, 2013
Location: Friedberg, Germany
Posts: 1025
Status: 
Offline
The Rx won't work properly if there's no aerial attached. If you are not sure whether you can fix that yourself, return it to DelTang. They can deal with the other issues as well.




____________________
Regards, H.
Back To Top

 Posted: Tue Nov 28th, 2017 03:03 pm
  PMQuoteReply
3rd Post
Corbs
Registered
 

Joined: Tue Mar 28th, 2017
Location:  
Posts: 10
Status: 
Offline
Thanks Helmut. Frank AKA Fallen suggested the same thing, so I'm going to see if I can solder on a replacement wire to function as an aerial.

Back To Top

 Posted: Wed Nov 29th, 2017 04:02 am
  PMQuoteReply
4th Post
Corbs
Registered
 

Joined: Tue Mar 28th, 2017
Location:  
Posts: 10
Status: 
Offline
I have fixed the antenna with a length of wire and it mostly works better now.

Here is a test with the 3v motor, inertia set to midway.

https://www.youtube.com/watch?v=ZCnAIxqgFoU&feature=youtu.be

What is strange is that it still does the 'runaway' thing, but only if you jam it in to full speed reverse. It doesn't do it when going forward.

Last edited on Wed Nov 29th, 2017 04:03 am by Corbs

Back To Top

 Posted: Wed Nov 29th, 2017 01:08 pm
  PMQuoteReply
5th Post
DavidT
Registered
 

Joined: Wed May 2nd, 2012
Location: United Kingdom
Posts: 474
Status: 
Offline
Corwin, The video shows what seems like correct operation to me. If the Rx and Tx are new the Rx should have 11 and 13 written on it by hand. If older then let me know please. Assuming the products are not old, locking up one way and not the other suggests either a hardware weakness in the Rx when used in reverse or that the motor draws more current in that direction and the Rx cannot cope. If you reverse the physical connections to the motor it could help diagnose which. It may also be helpful to observe what the led on the Rx does when it locks up. Also try to replicate the fault off the track. Regards, David.

Back To Top

 Posted: Wed Nov 29th, 2017 01:30 pm
  PMQuoteReply
6th Post
Corbs
Registered
 

Joined: Tue Mar 28th, 2017
Location:  
Posts: 10
Status: 
Offline
Hello David, thanks for the response. The Tx and Rx are about 2 years old (I think), I did not notice anything written on it.
I'll try reversing the connections as you suggest. When it locks up, I think the LED on the Rx shows a solid green light.
The fault does indeed occur off-track as well.

Last edited on Wed Nov 29th, 2017 02:03 pm by Corbs

Back To Top

 Posted: Wed Nov 29th, 2017 02:14 pm
  PMQuoteReply
7th Post
Corbs
Registered
 

Joined: Tue Mar 28th, 2017
Location:  
Posts: 10
Status: 
Offline
Could the issue be that the battery is 3.7v, and the motor is a 3v one, so cranking it up to full throttle causes the motor to go over its design limit?*

*I know nothing about how electronics work.

Back To Top

 Posted: Wed Nov 29th, 2017 03:41 pm
  PMQuoteReply
8th Post
davecttr
Registered
 

Joined: Sat Nov 9th, 2013
Location: United Kingdom
Posts: 367
Status: 
Online
A fully charged single lipo is up to 4.2V so that might make a difference.



____________________
Dave
Back To Top

 Posted: Wed Nov 29th, 2017 07:00 pm
  PMQuoteReply
9th Post
bobquincy
Registered


Joined: Sun Jan 27th, 2013
Location: North Carolina USA
Posts: 244
Status: 
Offline
Motors do not really have a voltage rating other than that a "3 V motor" will run ok on 3 volts. Most of my models run on 2.5 V but have a motor that is rated for 6 V (in a RC car). The motor runs fine on either voltage, just faster on 6 V than on 2.5 V. Slot car motors run on 12 V but most would probably be rated for much less. Anyway, your 3 V motor will run faster and have a shorter life on 3.7 V but should still run ok.

Is it possible that in reverse the motor draws enough current to lower the battery voltage to where the radio is not getting enough voltage and stops responding?



____________________
Monorail modelers have a one track mind.
Back To Top

 Posted: Wed Nov 29th, 2017 07:03 pm
  PMQuoteReply
10th Post
Corbs
Registered
 

Joined: Tue Mar 28th, 2017
Location:  
Posts: 10
Status: 
Offline
That sounds plausible! I could potentially solve it with some tape on the Tx and a 'do not go past this point' indicator.

Back To Top


 Current time is 11:36 am
Page:    1  2  3  Next Page Last Page  

Freerails > Model Railroad Forums > R.C. Control - The Future Now If You Desire > Seeking Assistance With 'DelTang' Rx61-22-W
Top



UltraBB 1.172 Copyright © 2007-2016 Data 1 Systems